Abstract: In this research, Description Logics (DLs) will be employed for logical description, logical characterisation,
logical modelling and ontological description of concept understanding in terminological systems. It’s
strongly believed that using a formal descriptive logic could support us in revealing logical assumptions
whose discovery may lead us to a better understanding of ‘concept understanding’. The Structure of
Observed Learning Outcomes (SOLO) model as an appropriate model of increasing complexity of humans’
understanding has supported the formal analysis.